Military reviews the drop in Afghanistan-related TBI

The Armed Forces Health Surveillance Center has reported a drop in cases of traumatic brain injury among U.S. forces serving in Afghanistan, from 645 cases per month in 2011 to 373 per month from January to October 2012. While declines in troop levels and overall mortality rates tied to improvised explosive devices are considered factors, analysts also say better diagnosis and treatment of concussions in combat zones could be responsible for the change.